I think my big habanero plant got powdery mildew? It was dropping leaves and too big so i chopped it all

Yes i have a fan in my grow tent. I even leave the tent open a little. But i wasnt paying close attention to humidity for a while. It must have been too crowded with leaves too. Habanero pepper plant in coco coir. 2×2 grow tent, 50 watt grow light. Maxigro